Plsss help I’ll mark u brainliesttt

Use the four functions below for this question. compare and contrast these four functions using complete sentences focus on the slope and y- intercept first, and then on any additional properties of each function

Acabinmaker buys 3.5 liters of oat varnish the varnish cost $4.95 per liter what is the total cost of 3.5 liters

Erin bought christmas cards for $2 each to send to her family and friends. which variable is the dependent variable?